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| author | Ralph Loader <suckfish@ihug.co.nz> | 2008-11-10 10:08:15 +0100 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2008-11-10 10:08:15 +0100 |
| commit | ff596cd202305b7d7c4f4511fdd505a01c6a5ece (patch) | |
| tree | f53c161297245fe4c06c693cc1f4ccf690cedb88 /gcc/combine.c | |
| parent | 75223c17538213f86175b988a1b876fdd735d86c (diff) | |
| download | gcc-ff596cd202305b7d7c4f4511fdd505a01c6a5ece.zip gcc-ff596cd202305b7d7c4f4511fdd505a01c6a5ece.tar.gz gcc-ff596cd202305b7d7c4f4511fdd505a01c6a5ece.tar.bz2 | |
re PR middle-end/37807 (Exponential compile time with MMX builtins.)
PR middle-end/37807
PR middle-end/37809
* combine.c (force_to_mode): Do not process vector types.
* rtlanal.c (nonzero_bits1): Do not process vector types.
(num_sign_bit_copies1): Likewise.
testsuite/ChangeLog
PR middle-end/37807
PR middle-end/37809
* gcc/testsuite/gcc.target/i386/mmx-8.c: New test.
From-SVN: r141732
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index e76049a..b8a4335 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -7323,6 +7323,10 @@ force_to_mode (rtx x, enum machine_mode mode, unsigned HOST_WIDE_INT mask, && (GET_MODE_MASK (GET_MODE (x)) & ~mask) == 0) return gen_lowpart (mode, x); + /* The arithmetic simplifications here do the wrong thing on vector modes. */ + if (VECTOR_MODE_P (mode) || VECTOR_MODE_P (GET_MODE (x))) + return gen_lowpart (mode, x); + switch (code) { case CLOBBER: |